Add test case for ON DELETE NO ACTION/RESTRICT

This was previously not covered at all; function
RI_FKey_restrict_del() was not exercised in the tests.
Reviewed-by: Alvaro Herrera <alvherre@2ndquadrant.com>
Reviewed-by: Mi Tar <mmitar@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/7ae17c95-0c99-d420-032a-c271f510112b@2ndquadrant.com/

src/test/regress/expected/foreign_key.out

@@ -1339,7 +1339,7 @@ DETAIL:  Key (f1)=(1) is still referenced from table "defc".
 -- Test the difference between NO ACTION and RESTRICT
 --
 create temp table pp (f1 int primary key);
-create temp table cc (f1 int references pp on update no action);
+create temp table cc (f1 int references pp on update no action on delete no action);
 insert into pp values(12);
 insert into pp values(11);
 update pp set f1=f1+1;
@@ -1348,9 +1348,12 @@ update pp set f1=f1+1;
 update pp set f1=f1+1; -- fail
 ERROR:  update or delete on table "pp" violates foreign key constraint "cc_f1_fkey" on table "cc"
 DETAIL:  Key (f1)=(13) is still referenced from table "cc".
+delete from pp where f1 = 13; -- fail
+ERROR:  update or delete on table "pp" violates foreign key constraint "cc_f1_fkey" on table "cc"
+DETAIL:  Key (f1)=(13) is still referenced from table "cc".
 drop table pp, cc;
 create temp table pp (f1 int primary key);
-create temp table cc (f1 int references pp on update restrict);
+create temp table cc (f1 int references pp on update restrict on delete restrict);
 insert into pp values(12);
 insert into pp values(11);
 update pp set f1=f1+1;
@@ -1358,6 +1361,9 @@ insert into cc values(13);
 update pp set f1=f1+1; -- fail
 ERROR:  update or delete on table "pp" violates foreign key constraint "cc_f1_fkey" on table "cc"
 DETAIL:  Key (f1)=(13) is still referenced from table "cc".
+delete from pp where f1 = 13; -- fail
+ERROR:  update or delete on table "pp" violates foreign key constraint "cc_f1_fkey" on table "cc"
+DETAIL:  Key (f1)=(13) is still referenced from table "cc".
 drop table pp, cc;
 --
 -- Test interaction of foreign-key optimization with rules (bug #14219)

src/test/regress/sql/foreign_key.sql

@@ -992,22 +992,24 @@ delete from defp where f1 = 1; -- fail
 -- Test the difference between NO ACTION and RESTRICT
 --
 create temp table pp (f1 int primary key);
-create temp table cc (f1 int references pp on update no action);
+create temp table cc (f1 int references pp on update no action on delete no action);
 insert into pp values(12);
 insert into pp values(11);
 update pp set f1=f1+1;
 insert into cc values(13);
 update pp set f1=f1+1;
 update pp set f1=f1+1; -- fail
+delete from pp where f1 = 13; -- fail
 drop table pp, cc;
 
 create temp table pp (f1 int primary key);
-create temp table cc (f1 int references pp on update restrict);
+create temp table cc (f1 int references pp on update restrict on delete restrict);
 insert into pp values(12);
 insert into pp values(11);
 update pp set f1=f1+1;
 insert into cc values(13);
 update pp set f1=f1+1; -- fail
+delete from pp where f1 = 13; -- fail
 drop table pp, cc;
 
 --